Ch 4 Add and Subtract Bar Models

Chapter 4: Bar Models

Videos

Part-Whole Modeling with with 2 Parts

Comparing Model 1 Step

Comparison Model Two Steps (Lesson 4)

Activities

Repair the Rocket (numbers within 20)

Space Race 3000 (numbers within 100)

Challenge

Videos:

Part Whole with 3 Parts

Comparison 3 Steps